<template>
  <div class="father">
    <h3>父组件</h3>
    <h4>a：{{ a }}</h4>
    <h4>b：{{ b }}</h4>
    <h4>c：{{ c }}</h4>
    <h4>d：{{ d }}</h4>
    <Child :a="a" :b="b" :c="c" :d="d" v-bind="{ x: 100, y: 200 }" :updateA="updateA" />
  </div>
</template>

<script setup lang="ts" name="Father">
import Child from "./Child.vue";
import { ref } from "vue";

let a = ref(1);
let b = ref(2);
let c = ref(3);
let d = ref(4);

function updateA(value: number) {
  a.value += value;
}
</script>

<style scoped>
.father {
  background-color: rgb(165, 164, 164);
  padding: 20px;
  border-radius: 10px;
}
</style>
